Cyber attacks such as ransomware can do great damage. Intrusion detection systems can help to detect those attacks. Especially with anomaly detection methods, it is possible to detect previous unknown attacks. In this paper, we present a graph-based approach in combination with existing methods trying to increase recognition rates and reduce false alarm rates. Our Hypotheses: By taking the inhe...

The complexity of continuous care settings has increased due to an ageing population, a dwindling number of caregivers and increasing costs. Electronic healthcare (eHealth) solutions are often introduced to deal with these issues. This technological equipment further increases the complexity of healthcare as the caregivers are responsible for integrating and configuring these solutions to their...

The system call interface defines the services an operating system kernel provides to user space programs. An operating system usually provides a uniform system call interface to all user programs, while in practice no programs utilize the whole set of the system calls. Existing system call based sandboxing and intrusion detection systems focus on confining program behavior using sophisticated ...

The paper addresses the problem of emulating a regular register in a synchronous distributed system where clients invoking read() and write() operations are anonymous while server processes maintaining the state of the register may be compromised by rational adversaries (i.e., a server might behave as rational malicious Byzantine process). We first model our problem as a Bayesian game between a...

Unusual behavior in computer systems can be detected by monitoring the system calls being executed by programs. Analysis of the temporal ordering of these calls reveals that such anomalies are localized within traces and that normal program behavior can be described compactly using deterministic finite automata. omputer use leaves trails of activity that can reveal signatures of misuse as well ...

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The aim of this paper is to introduce Parling, a multimodal system developed for supporting learning of English as a foreign language. It is devoted to 8-11 year-old Italian children learning English at primary school. Parling features a set of instructional games that change their vocabulary content dynamically based on the user’s learning needs. Moreover, Parling proposes a key feature to inv...

Long-running server applications can easily execute millions of common data-intensive system calls each day, incurring large data copy overheads. We introduce a new framework, Compound System Calls (Cosy), to enhance the performance of such applications. Cosy provides a mechanism to safely execute data-intensive code segments in the kernel. Cosy encodes a C code segment containing system calls ...

A system to assist call routing task for telephone operators at the Directorate General of Telecommunications (DGT) in Taiwan is reported in this paper. The system was developed based on DGT organization profile with description of its six divisions instead of a corpus of recorded and transcribed call-routing dialogs. An acoustic module and an information retrieval module were built specificall...

In a CALL-environment (Computerassisted language learning) programs should ideally allow the learner to train his/her communicative competence, which is one of the main goals of foreign language teaching nowadays. This can be reached by allowing learners to use and train their knowledge of a foreign language in realistic dialogue-style exercises. All levels of linguistic and communicational ana...